Riddle: How do you know when your alarm clock is hungry?
Answer: When it goes back four (for) seconds. 
Riddle: How far can a dog run into the woods?
Answer: Halfway, any farther and he would be running out of the woods.
Riddle: I know a word of letters three, add two and fewer there will be?
Answer: The word "few". Add "er" and it becomes fewer.
Short Riddles
Riddle: What did the skeleton order at the restaurant?
Answer: Spare-ribs!
Riddle: What lets you walk through walls?
Answer: Doors!
Short Riddles
Riddle: When are cooks cruel?
Answer: When they beat the eggs and whip the cream.
Riddle: What did the pirate say on his 80th birthday?
Answer: Arrgh! Aye Matey! (Arrgh! I'm 80!)
Short Riddles
Riddle: Where do Dutch hamsters live?
Answer: In Ham-sterdam.
Riddle: I'm essential to most flight, But can't fly on my own. What am I?
Answer: Feathers.
Riddle: You have 10 fish. 5 of your fish drowned. 3 came back to life. How many fish do you have left?
Answer: Fish can't drown. (LOL I know, still easy)
Riddle: What is in the middle of Paris?
Answer: The letter R.
Riddle: Where should you put a noisy dog?
Answer: In a barking lot!
Riddle: What does everybody give and few take?
Answer: Advice.
Riddle: Why is it so cold on Christmas?
Answer: Because it's in Decembrrr!
Riddle: How do you make a pirate angry?
Answer: Take away the "p" and he becomes irate.
Riddle: What game makes the most noise?
Answer: Tennis, you can't play it without raising a racket!
Riddle: Why does a firefly glow?
Answer: It eats light meals.
Riddle: Why do we look over a stone wall?
Answer: Because we cannot see through it.
Riddle: When does a public speaker steal lumber?
Answer: When he takes the floor.
Riddle: What tree is most warmly clad?
Answer: A Fir Tree.